What Causes Intestinal Gas?
Intestinal gas (farting or flatulence) is produced by bacteria when they digest foods, primarily sugars and nondigestible polysaccharides, that have not been digested during passage through the small intestine. Examples of these foods include:
- Lactose (the sugar in milk)
- High fructose corn syrup
- Wheat, oats, potatoes
- Purified grains (refined flours, etc.)